Storage battery.



No. 629,372.- Patented m 25, 1399. c. w. KENNEDY.

STORAGE BATTERY.

{Application filed Aug. 29, 1888.)

(N0 Modai.) 2 Sheets-Shee 1.

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No. 629,372. Patented July 25, I899.

C. W. KENNEDY.

STORAGE BATTERY.

(Application filed Aug 29, 18984) 2 Sheets-Sheet 2.

(No Model.)

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A -UNITE'D *STATE PATENT '4 is a face view of one of the sheet-metalsupport for modified forms of the electrode- .arms.

' j as this present invention relates rather to the i cups of hardrubber, as at A, each having their blank having projections at b b atone end and by preference having a projection b at my improvements.

ments as applied to a storage or secondary parts of the electrodes itwill be understood perspective in Fig. '3. Several of the steps CHARLESW. KENNEDY, OF BIUITLEDGE," PENNSYLVANIA, ssrcnon, BY

MESNE ASSIGNMENTS, TO THE COMPANY.

ELECTRIC POWER DEVELOPMENT STORAGEBATTERY.

SPEGIFIQATIONforming part of Letters Patent No. 629,372, dated July 25,1899.

Application filed August 29, 18%.

To all whom itmlay concern.-

Be it known that 1, CHARLES W. KENNEDY, a citizen of the United States,residing at Rutledge, in the county of Delaware and State ofPennsylvania, have invented certain new and useful Improvements inStorage Batteries, of which the following is a specification, referencebeing had therein to the accompanying drawings.

Figure 1 is a plan .view of a storage or secondary battery cell havingparts embodying Fig. 2 is a vertical section of a battery composed of aseries of several cells superimposed. Fig. 3 is a perspective of one ofthe electrodes detached. Fig.-

blanks from which are made the arms of the electrodes. Fig. 5 shows atop view of the blank after it has been partiallyformed up. Fig.6 is anend view of the blank atthe next stepin the shaping. Fig.1 shows theelectrode-arm finished. Figs. 8 and ,9'show the In the drawings I haveshown improvebattery cell ofa form now well known; but

manner of constructing and arranging the that the cells or cups can beof any preferred or well-known form. Those illustrated are side wallsflared upwardly and outwardlyand their-bottoms arranged to rest directlyoneupon another; In thesecells are placed electrodes having my presentfeatures of im provement. A finished electrode is shown in followed inthe manufacture thereof are illustrated in Figs. 4 to 9;

I cut blanks B, Fig. 5, from sheet-lead, each the other end and eachalsohaving an upper edge part b Each is bent so as to form a receptacle orinclose a chamber, the 'part b being turned so as to form a bottomwall band a side wall 6 The part biis turneddown to forzna topwall b One ofthe ends is then Serial No. 689,794. No model.)

' closed,- as by bending over the projection l),

forming an end wall b (See Fig. '7.) The blank B before or after it iscut from the sheet is provided with a large number of small perforationsC for a purpose to be described, and again the sheet-lead, either priorto bending, as is described, or subsequent thereto, is placed inelectrolytic material and subjected to the action of electric currentfor the purpose of charging it or making it active.

Both the inner and the outer faces, in fact, allof the exposed parts ofthe receptaclewalls, are thus made efficient for-battery pur- Thereceptacle thus provided and still poses. having one .end open is thenfilled with the active material ormaterial to be made active-as, forinstance, the oxid of lead, or whatever form of lead or other materialit is desired to usethis being preferably introduced in a granularcondition. I The receptacle is charged so as to be as full as isdesired,

care being takengto allowfor expansion.

Afterfit' has been so'charged with the active A material it is securedto the frame or carrier of the electrode and forms one of the armsthereof- The frame or carrier of the electrode which I prefer isishowndetached in Fig. 8, it consisting ofhorizontal parts D D,

with vertical parts (1 connecting them and spaced a suitable distanceapart- ,The arms of the electrode, each of which as a whole will be nowdesignated by B, is secured to v one of the vertical bars (1. This canbereadily accomplished by means of the above-described projections b,which after the blank B has beengbent, as-described, come oppositet'o-each other,'as in Fig. 7, andare so disposed asto readily fitagainst one of the said bars d, and afterbeing placed properlyrelatively to the bar they are securedby solder or by the application ofheat sufficient to soften the lead and cause the bars d and b, toreadily adhere. -After thearms are all in place and fastened theelectrode is of vthe appearance presented in Fig. 3. The arms B allproject parallel to each other inwardly from the'support or frame D d. Aconductor E'is secured to the carrier or frame D d, and by means of itcurrentcan be taken to or from the cell containing the electrode.

The electrode shown in Fig. 3 is the positive one of the coupleillustrated in Figs. 1 and 2.

The negative electrode is constructed in a manner substantially similarto that above described for making the positive, though by preference ithas one less arm, and for convenience in designation I have indicatedits arms in Figs. 1 and 2 by the letter B and its conductor byE; Itsarms when the electrodes are in place in. the cell alternate with thearms B of the positive electrode, they respectively lying midway betweentwo of the positive arms, and in order to prevent the contacting of thenegative arms with the positive and the consequent short-circuiting ofthe cell I employ spacing and holding devices F, preferably madefromcorrugated and perforated sheet-rubber,as shown in Fig.1. Theseelectrodes are arranged so thatihose of each couple lie between thebottom of one cell and the bottom of the one below. The masses of theactive material are relatively shallow, as

are also the several bodies of the electrolyte liquid. The specificgravity of the latter therefore is substantially the same throughout.The electrolyte has ready access to and circulates through the mass ofactive material in the armsB B The perforated walls of these arms notonly serve as a retaining-envelop for the active material, but alsoconstitute a large factor in the electric efficiency of the cell,inasmuch as, unlike the perforated lead envelops heretofore employed,they are preliminarily rendered highly active by suitable treatmentprior to being charged with the granular or other supplemental activematerial.

The cells may be electrically connected toother, the herein-describedpair of electrodes each consisting of a series of parallel perforatedsheet-lead tubes, the tubes of one electrode interlapping with the tubesof the other, all the tubes of both electrodes being in the samehorizontal plane, and charged with granular active material, twohorizontal connecting-bars, one for the outer ends of each series oftubes, the interlapping ends of the tubes being disconnected from eachother, and both the electrodes of each pair being adapted to besubmerged in one of the said shallow electrolytic masses between the bottom of one cell and the bottom of the one below, substantially as setforth.

2. In an electrode for a storage battery, the combination of thehorizontallyarranged frame-bar D having the vertical bars (1, theperforated sheet-lead tube having the lips or flanges 12 12 adapted tobe fastened to the said bars d and having the longitudinal side, top andbottom Walls (9 19 hi, and the end oppo-' site to the bar D adapted toreceive a charge of granular active'material, and the closing end Wall12 substantially as setrforth.

In testimony whereof I aflix my signature in presence of two Witnesses.

CHARLES lV. KENNEDY.

lVitnesses:

RICHARD B. CAVANAGH, H. H. BLIss.

